Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells

Liang Li, Yulin Yang, Ruiqing Fan, Shuo Chen, Ping Wang, Bin Yang, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

F-doped SnO2 (FTO) nanocrystals modified by Er and Yb with upconversion capability and excellent catalytic properties have been designed and fabricated as an economic replacement for Pt for use as the counter electrode (CE) in dye-sensitized solar cells. The cost of the UC-FTO counter electrode is only ∼1/20th of that for Pt. The upconverted luminescence-mediated energy transfer and the superior catalytic property for I3-/I- circulation overpowered the slight degradation caused by increased CE/electrolyte interface resistance. A 23.9% enhancement in photocurrent was achieved with little degradation in photovoltage, resulting in a 9.12% increase in solar-to-electric power conversion efficiency. Near-infrared (NIR) light-to-electricity has been directly observed by SPS and IPCE characterizations, showing the effect of the upconversion counter electrode.

Original languageEnglish (US)
Pages (from-to)8223-8229
Number of pages7
JournalACS Applied Materials and Interfaces
Volume6
Issue number11
DOIs
StatePublished - Jun 11 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells'. Together they form a unique fingerprint.

Cite this